(function() {
	
var toggleImg = function(e) {   
  if (excludeBtn && !in_array(this.id, excludeBtn)) {
    var y  = "";
    var bg = YAHOO.util.Dom.getStyle(this.id, 'background-position').split(" ");
    y      = (bg[1] == "0px") ? "-48px" : "0px"; 
    YAHOO.util.Dom.setStyle(this.id, 'background-position', bg[0] + " " + y);
  }
}

YAHOO.util.Event.addListener(['unternehmen', 'backwaren', 'standorte', 'service', 'karriere', 'kontakt', 'news'], 'mouseover', toggleImg);
YAHOO.util.Event.addListener(['unternehmen', 'backwaren', 'standorte', 'service', 'karriere', 'kontakt', 'news'], 'mouseout', toggleImg);

})();

// small helper
function in_array(item,arr) {
  for(p=0;p<arr.length;p++) if (item == arr[p]) return true;
  return false;
}

function availHeight()
{
  var x,y;
  if (self.innerHeight) { // all except Explorer
    x = self.innerWidth;
    y = self.innerHeight;
  } else if (document.documentElement && document.documentElement.clientHeight) {	// Explorer 6 Strict Mode
    x = document.documentElement.clientWidth;
    y = document.documentElement.clientHeight;
  } else if (document.body) { // other Explorers
    x = document.body.clientWidth;
    y = document.body.clientHeight;
  }
  
  return [x,y];
}